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if UNITED. STATES;

" frlrHoMAs sin, or BALTIMORE, MARYLAND.

Refonte FOR Priooucme BISULPHmE oF CARBON.

n 1speinatinrormng part of Letters Patent No. 1 i2,a9o, daten March 7,ieri.

.y ,-I, THOMAs SIM, of Baltimore, 1n the county t ofBaltinioreandStateof.Maryland-.have intvented a newff and Improved Retort for'ProducingiBisulphideof, Garbomrc., of which the the Intentan.

"fMy"inventionisintended to obviate a diflii culty heretoforelexperienced in cleaning re- `torts `for-the manufacture ofbisulphide ofcary honor other fluids produced by the combinai tionfof twoslids,whereinthe temperature of tvaporization of` said fluid and one ofits com- [ponent solids differs considerably. e

It is particularlydesighed `for the produc tion of` bisulphide,oftfrbompermitting the C vaporized sulphur` to ascend freely through fthe carbonand avoiding clogging the lower part ofthe reto`rt,as`well; as allowingthe refuse i `mass left afterithetoperation` is completed to t ibeireadlywithdrawnfron the retort. i i Y `In retorts of this classit hashitherto been necessary tolwithdrawl the refuse from the "aperture attop,` that being the only one projxvided for both filling and emptying.This was atedious andtronblesomeproeess. t `Descripiionof thcAcconwanymglbjctua'ngs.`

Thefigure isa centralvertical section,`show t ingthefretort'auditsconnections mounted on afurnaca General Description.

. t is the retortfsupported in any proper manner over the `furnace I,and surrounded 2 with anfinner` wall,G, and outer Wall, H, of

betweenthe retort and inner inner wall" preventing the llame from comingfin direct `eontactwith the retort, thereby insuring in uch greaterdurability.

"Gis, the neck of theretort, throughwhich `charcoalis introduced, theaperture4 thereof.

having attached a circular plate operated by a screw, and fitted tightlyto the orifice or other equivalent.

A is a pipe, provided with a suitable vapor tight cover, of sufficientsize to allow ready access to the interior of the retort, and passing4through the interior and exterior walls of the furnace.

.- D is a grate near the bottom o'f the retort,

`thus preventing clogging, and allowing the sublimed sulphur tothoroughly permeate the coal.

A pipe, O, is connected with the neckof the retort near its top. Thispipe is enlarged throughout a portion of its length, or conducted into achamber'of greater sectional area than itself, forming a sulphur-trap,O'. This part isinclined downwardly from the retort, and is surroundedby a furnace, K.

The pipe M, issuing from O', is surrounded by a condenser, P. Afterpassing th two branches-Ona M', leading downwardly Lto the tank orreservoir for receiving the condensed bisnlphide, and the other, M,passing upwardly through a second condenser, P', is led to asuitableplace for the discharge of the incondensible vapors.

The above-described arrangement of the sul; phurtrap and its connectionsmay, however, be varied without affecting the general principles ofconstruction and operation of the same.

Operation.

A charge of charcoal being introduced through the aperture C, this isclosed and sulto the bottom of the retort. All means of exit for thegases, except through the pipe O, being then closed, and lire started inthe furnace I, when the retort becomes sufficiently heated to vaporizethe sulphur, the' vapor passes up forming bisulphide of carbon, (GS)which passes over in gaseous form through the pipe i0, and is conductedoff by M to the condenser `P, where the greater portion of itiiscondensed, tpassing down through the pipe 'M'. The ini condensible gasesgenerated in the retort,and

`The above-described arrangement may be replaced, as shown in thedrawing, by a cap,

servingto separate the sul phur in its solid form from contact with thesuperimposed charcoal,

mughthis it is uividedinto o phur inserted into the pipe B, passing downthrough the carbon, combining therewith and any uncondensed CS, mingledtherewith, are carried upward by the pipe M through the second condenserP', where the remaining bisulphide is condensed, theincondensible gasesbeing nally discharged by the pipe M. The vaporiform free sulphur whichmay have passed through the retort is condensed within the sulphur-trapO. and drawn off in a molten state through the opening e as often asrequisite, say once a day, the furnace K being heated whenever necessaryfor this purpose. The sulphur is fed to the retort as often as required(at intervals of five to ten minutes, more or less) th rough the tube B,the door' of which is opened by means of the lever b, and reclosed assoon as the proper charge is introduced. Fresh charges ot' charcoal maybe su pplied at intervals of two to three days. The refuse massremaining in the retort is withdrawn, when necessary, through thecleaningout pipe A.

I do not claim the sulphur-trap O', it being the invention of Elias S.Hutchinson, of Baltimore, Maryland.

Claims.

I claim as my inventionl. The cleaning-out pipe, A, provided with avaportight cap or cover, in combination with a retort, constructed andoperated substantially as herein described.

2. In combination with a retort and its connections, as hereindescribed, the gate D, substantially as and for the purposes specified.

3. In combination with a tube, B, for intro- 'ducing materials into thebody of a retort, the

hinged cover b and forked lever or collar b', substantially as and forthe purposes specified.

4. In combination with a retort and its appendages, constructed andoperating substantially as herein described, the arrangementiof aninterior and exterior wall, formingre and air spaces above the furnaceLsubstantially as and for the purposes described.

THOS. SIM. Witnesses:

OorAvrUs KNIGHT, WVM. H. BRERETON, Jr.

